7. {0/1 Points] skipped part. Tutorial Exercise Use a double-angle formula to rewrite the expression. 9 sinxcosx sin 2u = PREVIOUS ANSWERS LARPCALC10 5.5.016.MI.SA. This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the 2 sin u cos 4 First write the double-angle formula of sine. X Submit ll (you cannot come back) Need Help? ASK YOUR TEACHER PRACTICE ANOTHER 9. [0/1 Points] DETAILS PREVIOUS ANSWERS LARPCALC1O 5.5.025. Rewrite cos 4x in terms of cos x. 2 8cos n8005n+1 X Need Help? . [-/1 Points] LARPCALC105.5.027.M|.SA. ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise Use the power-reducing formulas as many times as possible to rewrite the expression in terms of the rst power of the cosine. 6 cos4 x Rewrite the expression using a property of exponents. 6 cos4 x = 6(cos2 x)(cos x) ELM)\" cannot come back). Need Help? 11. [-/1 Points] DETAILS LARPCALC10 5.5.029. MY NOTES Use the power-reducing formulas to rewrite the expression in terms of first powers of the cosines of multiple angles. sin*(2x) Need Help? Read It Watch It 12. [-/1 Points] DETAILS LARPCALC10 5.5.038. MY NOTES Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67 30' sin(670 30') = cos(670 30') = tan(670 30') = Need Help? Read It13. [0.5/1 Points] DETAILS PREVIOUS ANSWERS LARPCALC10 5.5.045. Find all solutions of the equation in the interval [0, 2x). (Enter your answers as a comma-separated list. ) 2 8 sin ~ + 8 cos x = 0 X =14. [-11 Points] DETAILS LARPCALC10 5.5.051. Use the product-to-sum formulas to rewrite the product as a sum or difference. cos 26 cos 46 Z Need Help